Australians wanted for questioning over manus Island death

THE Federal Government might be happy to cheer about there being no asylum seeker boat arrivals for 100 days, but Immigration Minister Scott Morrison has less to say about two Australians wanted for questioning over a death on Manus Island.

Mr Morrison was joined by Prime Minister Tony Abbott to celebrate the keeping of its promise to stop the boats.

The Opposition Immigration spokesman Richard Marles said the Coalition's joy was thanks to policies put in place by the then-doomed Labor Government.

Meanwhile the government is refusing to discuss reports that Papua New Guinea police are investigation two Australian suspects in relation to the killing of detainee Reza Barati on Manus Island in February.

"That matter is still before the Papua New Guinean police and as I said, I'll be in PNG this week to get a further update on where those investigations are at," Mr Morrison said.

He said the government was waiting the result of its own inquiry into the incident.